전자부품 데이터시트 검색엔진
  Korean  ▼
ALLDATASHEET.CO.KR

X  

AM49DL640AG70IT 데이터시트(PDF) 22 Page - Advanced Micro Devices

부품명 AM49DL640AG70IT
상세설명  Stacked Multi-Chip Package (MCP) Flash Memory and SRAM
Download  65 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
제조업체  AMD [Advanced Micro Devices]
홈페이지  http://www.amd.com
Logo AMD - Advanced Micro Devices

AM49DL640AG70IT 데이터시트(HTML) 22 Page - Advanced Micro Devices

Back Button AM49DL640AG70IT Datasheet HTML 18Page - Advanced Micro Devices AM49DL640AG70IT Datasheet HTML 19Page - Advanced Micro Devices AM49DL640AG70IT Datasheet HTML 20Page - Advanced Micro Devices AM49DL640AG70IT Datasheet HTML 21Page - Advanced Micro Devices AM49DL640AG70IT Datasheet HTML 22Page - Advanced Micro Devices AM49DL640AG70IT Datasheet HTML 23Page - Advanced Micro Devices AM49DL640AG70IT Datasheet HTML 24Page - Advanced Micro Devices AM49DL640AG70IT Datasheet HTML 25Page - Advanced Micro Devices AM49DL640AG70IT Datasheet HTML 26Page - Advanced Micro Devices Next Button
Zoom Inzoom in Zoom Outzoom out
 22 / 65 page
background image
April 1, 2003
Am49DL640AG
21
PR E L I M I N A R Y
SecSi™ (Secured Silicon) Sector
Flash Memory Region
The SecSi (Secured Silicon) Sector feature provides a
Flash memory region that enables permanent part
identification through an Electronic Serial Number
(ESN). The SecSi Sector is 256 bytes in length, and
uses a SecSi Sector Indicator Bit (DQ7) to indicate
whether or not the SecSi Sector is locked when
shipped from the factory. This bit is permanently set at
the factory and cannot be changed, which prevents
cloning of a factory locked part. This ensures the secu-
rity of the ESN once the product is shipped to the field.
AMD offers the device with the SecSi Sector either
f act ory l ocke d o r cu st om e r l ocka ble . T he f ac-
tory-locked version is always protected when shipped
from the factory, and has the SecSi (Secured Silicon)
Sector Indicator Bit permanently set to a “1.” The cus-
tomer-lockable version is shipped with the SecSi Sec-
tor unprotected, allowing customers to utilize the that
sector in any manner they choose. The customer-lock-
able version has the SecSi (Secured Silicon) Sector
Indicator Bit permanently set to a “0.” Thus, the SecSi
Sector Indicator Bit prevents customer-lockable de-
vices from being used to replace devices that are fac-
tory locked.
The system accesses the SecSi Sector Secure Sector
through a command sequence (see “Enter SecSi™
Sector/Exit SecSi Sector Command Sequence”). After
the system has written the Enter SecSi Sector com-
mand sequence, it may read the SecSi Sector by
using the addresses normally occupied by the boot
sectors. This mode of operation continues until the
system issues the Exit SecSi Sector command se-
quence, or until power is removed from the device. On
power-up, or following a hardware reset, the device re-
verts to sending commands to the first 256 bytes of
Sector 0. Note that the ACC function and unlock by-
pass modes are not available when the SecSi Sector
is enabled.
Factory Locked: SecSi Sector Programmed and
Protected At the Factory
In a factory locked device, the SecSi Sector is pro-
tected when the device is shipped from the factory.
The SecSi Sector cannot be modified in any way. The
device is preprogrammed with both a random number
and a secure ESN. The 8-word random number will at
addresses 000000h–000007h in word mode (or
000000h–00000Fh in byte mode). The secure ESN
will be programmed in the next 8 words at addresses
000008h–00000Fh (or 000010h–000020h in byte
mode). The device is available preprogrammed with
one of the following:
■ A random, secure ESN only
■ Customer code through the ExpressFlash service
■ Both a random, secure ESN and customer code
through the ExpressFlash service.
Customers may opt to have their code programmed by
AMD through the AMD ExpressFlash service. AMD
programs the customer’s code, with or without the ran-
dom ESN. The devices are then shipped from AMD’s
factory with the SecSi Sector permanently locked.
Contact an AMD representative for details on using
AMD’s ExpressFlash service.
Customer Lockable: SecSi Sector NOT
Programmed or Protected At the Factory
If the security feature is not required, the SecSi Sector
can be treated as an additional Flash memory space.
The SecSi Sector can be read any number of times,
but can be programmed and locked only once. Note
that the accelerated programming (ACC) and unlock
bypass functions are not available when programming
the SecSi Sector.
The SecSi Sector area can be protected using one of
the following procedures:
■ Write the three-cycle Enter SecSi Sector Region
command sequence, and then follow the in-system
sector protect algorithm as shown in Figure 2, ex-
cept that RESET# may be at either V
IH or VID. This
allows in-system protection of the SecSi Sector Re-
gion without raising any device pin to a high voltage.
Note that this method is only applicable to the SecSi
Sector.
■ To verify the protect/unprotect status of the SecSi
Sector, follow the algorithm shown in Figure 3.
Once the SecSi Sector is locked and verified, the sys-
tem must write the Exit SecSi Sector Region com-
mand sequence to return to reading and writing the
remainder of the array.
The SecSi Sector lock must be used with caution
since, once locked, there is no procedure available for
unlocking the SecSi Sector area and none of the bits
in the SecSi Sector memory space can be modified in
any way.


유사한 부품 번호 - AM49DL640AG70IT

제조업체부품명데이터시트상세설명
logo
SPANSION
AM49DL640AH SPANSION-AM49DL640AH Datasheet
995Kb / 63P
   64 Megabit (4 M x 16-Bit) CMOS 3.0 Volt-only, Simultaneous Operation Flash Memory and 16 Mbit (1 M x 16-Bit) Pseudo Static RAM
AM49DL640AH56IS SPANSION-AM49DL640AH56IS Datasheet
995Kb / 63P
   64 Megabit (4 M x 16-Bit) CMOS 3.0 Volt-only, Simultaneous Operation Flash Memory and 16 Mbit (1 M x 16-Bit) Pseudo Static RAM
AM49DL640AH56IT SPANSION-AM49DL640AH56IT Datasheet
995Kb / 63P
   64 Megabit (4 M x 16-Bit) CMOS 3.0 Volt-only, Simultaneous Operation Flash Memory and 16 Mbit (1 M x 16-Bit) Pseudo Static RAM
AM49DL640AH70IS SPANSION-AM49DL640AH70IS Datasheet
995Kb / 63P
   64 Megabit (4 M x 16-Bit) CMOS 3.0 Volt-only, Simultaneous Operation Flash Memory and 16 Mbit (1 M x 16-Bit) Pseudo Static RAM
AM49DL640AH70IT SPANSION-AM49DL640AH70IT Datasheet
995Kb / 63P
   64 Megabit (4 M x 16-Bit) CMOS 3.0 Volt-only, Simultaneous Operation Flash Memory and 16 Mbit (1 M x 16-Bit) Pseudo Static RAM
More results

유사한 설명 - AM49DL640AG70IT

제조업체부품명데이터시트상세설명
logo
Advanced Micro Devices
DS42553 AMD-DS42553 Datasheet
955Kb / 58P
   Stacked Multi-Chip Package (MCP) Flash Memory and SRAM
logo
SPANSION
AM41DL3208G SPANSION-AM41DL3208G Datasheet
1Mb / 65P
   Stacked Multi-Chip Package (MCP) Flash Memory and SRAM
AM42DL6404G SPANSION-AM42DL6404G Datasheet
1,020Kb / 61P
   Stacked Multi-Chip Package (MCP) Flash Memory and SRAM
logo
Advanced Micro Devices
DS42515 AMD-DS42515 Datasheet
830Kb / 57P
   Stacked Multi-Chip Package (MCP) Flash Memory and SRAM
DS42585 AMD-DS42585 Datasheet
958Kb / 58P
   Stacked Multi-Chip Package (MCP) Flash Memory and SRAM
DS42587 AMD-DS42587 Datasheet
958Kb / 58P
   Stacked Multi-Chip Package (MCP) Flash Memory and SRAM
DS42514 AMD-DS42514 Datasheet
832Kb / 57P
   Stacked Multi-Chip Package (MCP) Flash Memory and SRAM
logo
SPANSION
AM42BDS640AG SPANSION-AM42BDS640AG Datasheet
1Mb / 72P
   Stacked Multi-Chip Package (MCP) Flash Memory and SRAM
logo
Advanced Micro Devices
AM41DL6408H AMD-AM41DL6408H Datasheet
1Mb / 66P
   Stacked Multi-Chip Package (MCP) Flash Memory and SRAM
DS42516 AMD-DS42516 Datasheet
953Kb / 58P
   Stacked Multi-Chip Package (MCP) Flash Memory and SRAM
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65


데이터시트 다운로드

Go To PDF Page


링크 URL




개인정보취급방침
ALLDATASHEET.CO.KR
ALLDATASHEET 가 귀하에 도움이 되셨나요?  [ DONATE ] 

Alldatasheet는?   |   광고문의   |   운영자에게 연락하기   |   개인정보취급방침   |   링크교환   |   제조사별 검색
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com